<template>

    <button @click="changeNode">修改节点颜色事件</button>

    <h2>点击修改节点颜色</h2>

    <div id="chart-diagram" style="background-color: whitesmoke; width: 1000px; height: 1000px;">
    </div>


</template>

<script setup>
    import {onMounted} from 'vue';
    import go from "gojs";

    let myDiagram = null;


    const changeNode = () => {
        var data = myDiagram.model.findNodeDataForKey("Delta");
        // 这个方式可以更新
        if (data !== null) myDiagram.model.setDataProperty(data, "color", "red");
    }

    const init = () => {

        const $ = go.GraphObject.make

        myDiagram = new go.Diagram("chart-diagram", {
            'grid.visible': true, // 显示网格
            'clickCreatingTool.archetypeNodeData': {category: 'Normal', text: '新节点', notice: ''}, // 双击新建节点(可以写入节点的默认信息)；；
            'toolManager.hoverDelay': 100, // tooltip提示显示延时
            'toolManager.toolTipDuration': 10000, // tooltip持续显示时间
            allowMove: true, // 允许拖动画板
            allowDragOut: true, // 允许拖拽节点
            allowDelete: true, // 允许删除节点
            allowCopy: true, // 允许复制节点
            allowClipboard: true, // 允许粘贴节点

        });

        myDiagram.nodeTemplate =
            $(go.Node, "Auto",
                {selectionAdorned: false},  // 显示选中边框
                $(go.Shape, "RoundedRectangle",
                    //isSelected默认fasle,true(操作型属性无法在模板定义，只能在节点生成后操作)例如，节点或线对象.isSelected=true;
                    new go.Binding("fill", "isSelected", function (sel) {
                        return sel ? "dodgerblue" : "lightgray";
                    }).ofObject()),  // no name means bind to the whole Part
                $(go.TextBlock,
                    {margin: 5},
                    new go.Binding("text", "descr"))
            );


        myDiagram.model.nodeDataArray = [
            {descr: "Select me!"},
            {descr: "I turn blue when selected."}
        ];


    };

    onMounted(() => {
        init();
    });


</script>

<style scoped>

</style>